Determination of physical, mechanical and burning characteristics of polymeric waste material briquettes

2010 ◽  
Vol 16 (4) ◽  
pp. 307 ◽  
Author(s):  
J Kers ◽  
P Kulu ◽  
A Aruniit ◽  
V Laurmaa ◽  
P Križan ◽  
...  
Keyword(s):  
Waste Material ◽  
Polymeric Waste

Feasibility of microwave-assisted ultraviolet digestion of polymeric waste electrical and electronic equipment for the determination of bromine and metals (Cd, Cr, Hg, Pb and Sb) by ICP-MS

2017 ◽  
Vol 32 (9) ◽  
pp. 1789-1797 ◽  
Author(s):  
Gabrielle D. Iop ◽  
Sindy R. Krzyzaniak ◽  
Jussiane S. Silva ◽  
Erico M. M. Flores ◽  
Adilson B. Costa ◽  
...  
Keyword(s):  
Electronic Equipment ◽  
Microwave Assisted ◽  
Wet Digestion ◽  
Icp Ms ◽  
Polymeric Waste

A method for the digestion of polymeric waste electrical and electronic equipment (WEEE) by microwave-assisted ultraviolet wet digestion (MAWD-UV) was proposed.

scholarly journals A Methodology of Waste Material Utilization in Concrete Mix for Rigid Pavement Construction

2021 ◽  
Vol 9 (9) ◽  
pp. 2124-2128
Author(s):  
Ramkrishna Birla
Keyword(s):  
Natural Resources ◽  
Coarse Aggregate ◽  
Waste Material ◽  
Ecological Problem ◽  
Fine Aggregate ◽  
Rigid Pavement ◽  
Concrete Production ◽  
Concrete Mix ◽  
Pavement Construction

Abstract: The demand of concrete for rigid pavement construction is constantly growing. Thus, the extraction of fine aggregate, coarse aggregate and cement from natural resources also increases. The more extraction of these virgin materials from the natural resources enhances the cost of these materials progressively. Therefore, it has severely affected the financial viability of the government for rigid pavement construction. Further, due to urbanization and industrialization the amount of waste material is also increased. This state creating an ecological problem that must be addressed. Therefore, there is an urgent need to preserve natural resources by using recycled or discarded wastes as a construction material. Hence the main objective of this work is to study of utilization of waste material in concrete production for rigid pavement construction. A four stages methodology is proposed in this study. these stages are (I) Determination of quantity of various materials for development of concrete mix (II) Identification of significant waste materials and their properties (III) Prepare concrete mix using replacement of cement, sand, and aggregate by waste material and (IV) Comparative evaluation of different properties of developed concrete mix. This study to check the suitability of waste foundry sand (WFS), granulated blast furnace slag (GBFS), and waste rubber tyre (WRT) as a replacement of fine aggregate, cement, and coarse aggregate respectively. The analysis and results indicated that WFS, GBFS, and WRT can be used as a replacement of fine aggregate, cement, and coarse aggregate respectively. Thus, it is expected that the proposed methodology will be useful for researcher to determination of suitability of different alternative materials for replacement of cement, fine aggregate, and coarse aggregate Keywords: Concrete mix, Waste Material, GGBS, WFS, WRT etc.

scholarly journals The Determination of Bound Water in Waste Phosphatic Clay

2009 ◽  
Vol 2009 ◽  
pp. 1-3 ◽  
Author(s):  
Mahir Dham ◽  
Bjorn Birgisson ◽  
Andrew J. Boyd
Keyword(s):  
Cement Paste ◽  
Bound Water ◽  
High Water ◽  
Waste Material ◽  
Hydration Reaction ◽  
Strip Mining ◽  
Mixing Matrix ◽  
Cementing Material ◽  
Water Holding

Phosphatic clay is a by-product of phosphate strip mining, particularly in Florida, USA. This waste material occupies about 100 000 acres of land which could be utilized for other causes. Thus, its use as an alternating cementing material for the addition into the mixing matrix of cement paste and concrete to yield higher strength would be profitable for both materials involved. But the biggest drawback faced is that the phosphatic clay possesses high water holding capacity. The water is thus not available for mixing purposes when added to cement paste and concrete and is thus known as bound water. It is therefore essential to determine the amount of bound water to phosphatic clay which shall not be available for the hydration reaction of cement in cement paste and concrete.

scholarly journals JUSTIFICATION OF METHODS OF POLYMERIC WASTE PROCESSING IN AGRICULTURAL PRODUCTION

2021 ◽  
pp. 97-108
Author(s):  
Yuriy Paladiichuk ◽  
Inna Telyatnuk
Keyword(s):  
Raw Materials ◽  
Physical And Mechanical Properties ◽  
Industrial Complex ◽  
Body Parts ◽  
Polymer Waste ◽  
Processing Technologies ◽  
Plastic Bags ◽  
Mineral Fillers ◽  
Polymeric Waste

The development of industry has led to the unlimited technological application of polymers, ranging from plastic bags, rubber, fabrics, paper and other materials. Displacing traditional materials, polymer products began to be used in agriculture. Polymers are used to make films for soil cover (mulching), anti-hail nets, shaft bushings, gears, body parts, tanks for storage and transportation of fertilizers and working fluids and many other parts. The operational properties of polymer products are becoming more and more perfect, but at the same time the methods of polymer waste management and their utilization are being developed and complicated. Over time, they can no longer be used for their intended purpose, so they are discarded and sent to landfills, while polymers are valuable structural materials and their reuse will not only be positive for the environment, but can also become a profitable branch of the agro-industrial complex. Pellet production is one of the methods of recycling polymer waste, which in the future can be used for the production of new parts, as well as added to the composition of composite materials based on organic or mineral fillers. This article examines the problem of recycling polymer waste by improving their processing technologies. The analysis of existing methods of utilization and processing of polymeric waste generated in agriculture is carried out. Determination of physical and mechanical properties of polymer waste, in particular thermoplastics. Taking into account the received information, conclusions are made and the analysis of methods of utilization and processing of polymeric waste in secondary raw materials is carried out.

Synthesis of tetra(2,2-hydroxyethylene) terephthalamide from PET waste and its application in synthesis of polyesteramide coating

2017 ◽  
Vol 46 (1) ◽  
pp. 40-47
Author(s):  
Pradnya C. Rane ◽  
Aarti P. More ◽  
Shashank T. Mhaske
Keyword(s):  
Raw Materials ◽  
Waste Material ◽  
Fatty Amide ◽  
Structure Property ◽  
Pet Waste ◽  
Content Type ◽  
Structural Part ◽  
Amide Linkage ◽  
Petroleum Resources ◽  
Polymeric Waste

Purpose The purpose of this paper is to discuss the synthesis of polyesteramide resin from the monomer obtained from poly (ethylene terephthalate) (PET) waste and study of the structure – property relation for the same in polyesteramide coating. The purpose is also not only to just target the polymeric waste but also to study the effect of the structure of monomer obtained from such waste in final coating. Design/methodology/approach PET waste was depolymerised using diethanolamine to tetra(2,2-hydroxyethylene) terephthalamide (THETA). Four functional hydroxyl terminated monomers were generated having amide linkage as a structural part. THETA was used for the synthesis of polyesteramide resin along with fatty amide of oil, and concentration of the THETA was varied. The synthesised polyesteramide resin was cured with MF resin and tested for physico-chemical, thermal and anticorrosive properties. Findings PET was successfully depolymerised to monomeric level using diethanolamine as a reactive agent. It is observed that as the concentration of THETA increases, the hardness of the coating increases, as aromatic concentration increases in the coating. The amide linkage helps to improve adhesion as well as hydrophobicity because an aliphatic long chain of fatty amide and aromatic linkage of THETA helps in improving anticorrosive properties of the coating. Practical implications This method is the useful key to solve the polymeric waste problem. PET can be easily depolymerised using diethanolamine and polyesteramide resin synthesised from it. Hence, waste material can be converted into the coating by reacting it with renewable resources. Originality/value To the best of the authors’ knowledge, this is the first study which uses THETA as a monomer for the synthesis of polyesteramide resin and study of its various concentrations on coating properties. The coating is obtained from waste material; hence, polymeric waste issue is also solved, and dependency on the petroleum resources to obtain raw materials for coating is also depleted partially. The study also helps to understand the effect of the structure of monomers on the properties of the coating.

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